Make sure we have a list.

Something from PB on PROD is very different from what we expect...

Author: cullerton

crc/services/study_service.py

@@ -555,7 +555,7 @@ def sync_with_protocol_builder_if_enabled(self, user, specs):
             for study in db_studies:
                 # we don't manage Exempt studies
                 pb_study_info = ProtocolBuilderService.get_irb_info(study.id)
-                if len(pb_study_info) > 0:
+                if isinstance(pb_study_info, list)  and len(pb_study_info) > 0:
                     if ('IRB_REVIEW_TYPE' in pb_study_info[0] and
                             pb_study_info[0]['IRB_REVIEW_TYPE'] ==
                             'Exempt'):